Condensed Consolidated Statements of Operations (USD $) In Millions, except Per Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Revenue:
Services	$ 4,727	$ 3,371	$ 8,918	$ 6,216
Product sales	1,208	1,016	2,299	1,932
Total revenue	5,935	4,387	11,217	8,148
Operating costs and expenses:
Cost of services	3,659	2,716	7,087	5,184
Cost of sales	1,050	862	2,020	1,648
General and administrative	65	47	135	105
Total operating costs and expenses	4,774	3,625	9,242	6,937
Operating income	1,161	762	1,975	1,211
Interest expense, net of interest income of $2, $3, $3, and $6	(63)	(76)	(132)	(152)
Other, net	(5)	(9)	(9)	(49)
Income from continuing operations before income taxes	1,093	677	1,834	1,010
Provision for income taxes	(352)	(200)	(581)	(321)
Income from continuing operations	741	477	1,253	689
Income (loss) from discontinued operations, net of income tax (provision) benefit of $1, $(3), $1, and $(0)	0	6	(1)	1
Net income	741	483	1,252	690
Noncontrolling interest in net income of subsidiaries	(2)	(3)	(2)	(4)
Net income attributable to company	739	480	1,250	686
Amounts attributable to company shareholders:
Income from continuing operations	739	474	1,251	685
Income (loss) from discontinued operations, net	0	6	(1)	1
Net income attributable to company	$ 739	$ 480	$ 1,250	$ 686
Basic income per share attributable to company shareholders:
Income from continuing operations (in dollars per share)	$ 0.81	$ 0.52	$ 1.37	$ 0.76
Income from discontinued operations, net (in dollars per share)	$ 0	$ 0.01	$ 0	$ 0
Net income per share (in dollars per share)	$ 0.81	$ 0.53	$ 1.37	$ 0.76
Diluted income per share attributable to company shareholders:
Income from continuing operations (in dollars per share)	$ 0.80	$ 0.52	$ 1.36	$ 0.75
Income from discontinued operations, net (in dollars per share)	$ 0	$ 0.01	$ 0	$ 0.01
Net income per share (in dollars per share)	$ 0.80	$ 0.53	$ 1.36	$ 0.76
Cash dividends per share (in dollars per share)	$ 0.09	$ 0.09	$ 0.18	$ 0.18
Basic weighted average common shares outstanding (in shares)	916	906	915	906
Diluted weighted average common shares outstanding (in shares)	921	909	920	908